I heard somethin about the gen 4 having a recall and the gen 3s are more reliable what are the diffrences other than grip texture? Are the internals the same? If a part on my gen 3 broke can I interchange it with a gen 4 part? Please give me more knowledge on this.

The gen 4 has a slightly different trigger group that adds about a pound and a half to the pull. You can change them out with older models. My gen 2 has a gen 4 trigger group in it (not by choice). I haven't heard about any other issues.

There are many issues with gen 4 that idk y glock did what they did if it's not broke don't fix it but I made a thread on gen 4 issues where I stated every issue I could look up and find from all over...